In the above script I have added fadeIn effect to it, I don't know if I have done it right according to script writting I am not good in scripts So, I would like have an advise if it's well written or there is some comma mistake.

But that is not my important question, all of the above lazy load plugin is used with QuickSand Jquery plugin that I am using for sorting.
QuickSand Jquery Plugin requires callback function if it's tooltip or Lazy Load, So can someone kindly tell me how to make lazy load work together with quicksand jquery.
Here is the quicksand's script: